Reliability modeling of a spool valve considering the dependencies among failure mechanisms and epistemic uncertainty

Abstract : The aim of this paper is to develop a reliability model fora spool valve whichis subject to the effects of two failure mechanisms, wear and clamping stagnation. In the reliability model, the wear process is described by a linear degradation process and the clamping stagnation is modeled as a shock process, de-scribed by a non-homogeneous Poisson process. The model accounts for the interactions between the two failure mechanisms, by assuming that the rate of occurrence of the shocks depends on the degradation level of the spool valve. The results show that by accounting for the interactions between the failure processes, the re-liability of the spool valve is significantly downgraded compared to the case with independent failure process-es.
Document type :
Conference papers
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01787850
Contributor : Zhiguo Zeng <>
Submitted on : Monday, May 7, 2018 - 6:41:45 PM
Last modification on : Tuesday, January 21, 2020 - 2:54:26 PM

Identifiers

  • HAL Id : hal-01787850, version 1

Citation

Mengfei Fan, Zhiguo Zeng, Rui Kang, Enrico Zio. Reliability modeling of a spool valve considering the dependencies among failure mechanisms and epistemic uncertainty. Safety and Reliability of Complex Engineered Systems-Proceedings of the 25th European Safety and Reliability Conference, ESREL, Sep 2015, Zurich, Switzerland. ⟨hal-01787850⟩

Share

Metrics

Record views

74